The length breadth and height of a rectangular soild are in the ratio of 6:5:4.if the total surface area is 5328cm².find its dimensions
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Total surface area= 2( lb + bh + hl)
5328 = 2 [(6x)(5x) + (5x)(4x) + (6x)(4x)]
5328 = 2× 74x^2
5328 = 148x^2
x^2 = 36
x=6 cm
so length= 6x =36 cm
breadth= 5x=30 cm
height= 4x= 24 cm
5328 = 2 [(6x)(5x) + (5x)(4x) + (6x)(4x)]
5328 = 2× 74x^2
5328 = 148x^2
x^2 = 36
x=6 cm
so length= 6x =36 cm
breadth= 5x=30 cm
height= 4x= 24 cm
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